Wittgenstein's "family resemblance" meme is gaining traction among the mathematicians and math teachers on the math-teach list at the Math Forum. We've been yakking about the meaning of "multiplication". Young children are often taught it's "repeated addition", but will this lead to confusions later? Thanks to the Wittgenstein camp, we have a more sophisticated way of communicating the non-monolithic nature of the "multiplication" concept. In short, we have "family resemblance". Relevant links: http://mathforum.org/kb/message.jspa?messageID=7002516&tstart=0 http://mathforum.org/kb/message.jspa?messageID=7002590&tstart=0 Kirby ========================================== Need Something? Check here: http://ludwig.squarespace.com/wittrslinks/